2. Michelle Obama’s marigold dress showcased optimism, the Cuban-American designer Narciso Rodriguez and the administration’s careful control of optics. Mr. Obama’s emphasis on successes included the $80 billion his 2009 stimulus pumped into clean and renewable energy projects. But experts say the benefits he cited — cheaper, cleaner energy and an increase in jobs — stem more from government policies and market forces.

5. The Treasury Department announced new rules on cash purchases of real estate by shell companies, focused for the moment on two of the hottest markets. “We are concerned about the possibility that dirty money is being put into luxury real estate,” a Treasury official said. In Manhattan, buyers spending $3 million must be identified; in Miami-Dade County, the limit is anything over $1 million.

7. Al Jazeera America, the Qatari-owned cable news channel, is closing shop after just two and a half years, never having found an audience of any real size. And General Electric is moving its headquarters from Fairfield, Conn., aiming to enhance its shift to the “industrial Internet” by retrenching in Boston, in the vicinity of research universities like M.I.T., Harvard and Northeastern.

U.S. stocks plunged, with Netflix and Amazon taking a beating and crude trading near $30 a barrel. The S.&P. 500 lost 2.5 percent, bringing it down 10 percent from its November peak. The Dow Jones sank 2.2 percent, and the Nasdaq dropped 3.4 percent.

_____

Image

CreditJulie Turkewitz/The New York Times

8. The armed occupation of an Oregon nature preserve, now in its second week, has deeply unnerved the surrounding community. A spokesman for the armed group — led by Ammon Bundy, above with his son — said members would visit a nearby town on Friday “to explain to the community why we are here and when we will be leaving.”

_____

Image

CreditMike Groll/Associated Press

9.Gov. Andrew Cuomo’s State of the State address did little to warm frosty relations with New York City’s mayor, Bill de Blasio, above. The governor unveiled a $20 billion plan for affordable housing, which will help address a crisis for Mr. de Blasio, but that was offset by calling on the city to increase its contribution to the City University system and Medicaid.

_____

Image

CreditTony Avelar/Associated Press

10. The decision to allow the Rams to move to Los Angeles left St. Louis furious — mainly because of what our sports writer called “a poison-pen, Dear John letter” by the team’s owner, Enos Stanley Kroenke, “who suggested that St. Louis was an economic abyss ill-suited to hosting an N.F.L. team.”

_____

Video

Iran released 10 United States Navy sailors it detained overnight for “trespassing” in its waters.CreditCreditSepahnews, via Associated Press

11. Iran released the 10 U.S. sailors manning two small patrol boats that it said had been “snooping” in Iranian waters. The U.S. said it did not know how the Navy managed to lose contact with both boats, but Secretary of State John Kerry hailed the swift resolution. “We can all imagine how a similar situation might have played out three or four years ago,” he said. The video above includes images from Iranian state television.